2017 Map of West Alkali Reservoir

About this map

W Alkali Reservoir and several other managed water catchments sit within this section of Phillips County, Montana, illustrating the critical role of water storage in this arid northern plains landscape. The drainage system is defined by numerous coulees, such as North Fork Halfway Coulee and South Fork Halfway Coulee to the north, which converge to manage seasonal runoff. The inclusion of Reservoir Number One Hundred Sixty-one and Partnership Reservoir suggests a highly organized approach to resource management, likely supporting local livestock or agriculture in the sprawling terrain of Rudolph Valley. US Route 191 serves as the primary artery through the area, intersecting the coulees and connecting these remote water features. The naming conventions, including Rudolph Coulee and Williams Coulee, often reflect the early families or figures associated with the surveying and settlement of these high plains.